What events are you looking at? Schutzhund? You have several clubs around you. I was advised to visit the clubs over the events. First, the dogs are more likely to be stressed in training and second, people will have more time to talk to you.
Here is a listing of clubs and events
United Schutzhund Clubs of America - For the German Shepherd Dog
Jax Von Monkeybutt, CGC
Queen Banshee Boo
Sierra the Undecided
Cracker, The Great Shedder
Rich N Handsome, "Red"